dotvecmat¶
Vector times matrix from left side, i.e. transpose(x)A.
Parameters¶
-
x
-
A
Examples¶
>>> from river import utils
>>> x = {0: 4, 1: 5}
>>> A = {
... (0, 0): 0, (0, 1): 1,
... (1, 0): 2, (1, 1): 3
... }
>>> C = dotvecmat(x, A)
>>> print(C)
{0: 10.0, 1: 19.0}